run-in
/ˈrʌnɪn/noun
1
- usu. in sing. the approach to an action or event（行动或事件的）临近; 前奏：
the final run-in to the World Cup.
临近世界杯足球赛的最后（或倒计时）阶段。
1.1
- the home stretch of a race course（跑道的）终点直道; 最后一段路程。
1.2
- a period during which an engine or other device is run in（发动机或其他装置的）试转期, 磨合运转期; 磨合试车期。
2
- informal a disagreement or fight, especially with someone in an official position〈非正式〉（尤指与官方人士的）争执, 争论; 争吵; 冲突：
a run-in with armed police in Rio.
与里约热内卢武装警察的冲突。
2.1
- a collision碰撞; 冲突：
a run-in with a parking meter.
与汽车停放计时器的碰撞。